This patch broke combos. Randomly, your fourth click in a combo won't register. Also affects mining and harvesting of any kind. Holding down buttons for mining works around this but this isn't an option with combat. Bug is, funny enough, bigger than any bug fixed and makes the game feel pretty bad.
It's not a bug but the spam input fix. We're still tweaking the numbers, but pressing the buttons in sync with the animations shouldn't trigger this filter.